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Fluvial Architecture of Triassic-Jurassic Sediments of the Bundamba Group in the Northern Part of the Clarence-Moreton Basin,
Queensland : An Excursion Guide for the 5th International Conference on Fluvial Sedimentology. Modern and Ancient Rivers -
Their Importance to Mankind

Citation

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Wells, A.T. & O'Brien, P.E.,
1993.
Fluvial Architecture of Triassic-Jurassic Sediments of the Bundamba Group in the Northern Part of the Clarence-Moreton Basin,
Queensland : An Excursion Guide for the 5th International Conference on Fluvial Sedimentology. Modern and Ancient Rivers -
Their Importance to Mankind.
Record
1993/045.
Australian Geological Survey Organisation,
Canberra.

Abstract

This excursion guide provides an introduction to the fluvial sedimentology of theTriassic- Jurassic Bundamba Group in the
northern part of the Clarence-MoretonBasin which is situated in the southeastern part of Queensland (Fig.1). The excursion
guide is written so that the major exposures of fluvial rocksbetween Ipswich and Toowoomba can be examined. Descriptions of
fourteenstops are included in the guide and if all the outcrops are inspected the total roaddistance covered is about 350
km, with Brisbane as the starting and finishingpoint. Figure 2 shows the excursion route and position of the stops. The itinerarygiven
at the end of this guide includes an appropriate number of stops based on aone day excursion.
The area is readily accessible with most of the sediments exposed in roadcuttings along the Warrego Highway; others occur
in cuttings on theClifden-Gatton Road and the Murphys Creek Road, small access roads branchingoff the Warrego Highway . All
these roads provide sealed, all weather access.Great care should be taken when examining cuttings on the Warrego Highway asit
carries a large volume of traffic.The Main Roads Department generally requestthat appropriate signs be erected during road
cutting examination on mainhighways. There are several small towns along the Warrego Highway thatprovide accommodation and
where provisions may be purchased. The city ofToowoomba is a convenient stepping off point to visit geological features in
thenorthern Clarence-Moreton Basin.
The data used in compiling this excursion guide is largely derived from theAustralian Geological Survey (AGSO) Bulletin 241,
(Wells & O'Brien, in press),and in particular an included paper on the sedimentology of the Bundamba Group( O'Brien & Wells,
in press).
The reader is referred to Wells, O'Brien, Willis & Cranfield (1990), Cranfield,Hutton and Green (1989), and Cranfield, Schwarzbock
and Day (1976), fordescriptions of the regional geology of the northern part of the Clarence-MoretonBasin.